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Moosync vs Riff: catalog facts
Moosync	Riff
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source under the MIT licence; a Spotify account is needed to stream.
Linux	Linux
Plays Spotify and YouTube tracks alongside local music Theme engine and extension API	Native GTK interface that fits the GNOME desktop Written in Rust rather than built on Electron
Streaming features depend on third-party services Small community	Requires a Spotify account Unofficial client, so it depends on Spotify's services continuing to work with it
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT
No account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.